ASUS Zenfone 2 and 4G

[jimboy47]

I have a ASUS Zenfone 2 that will not connect to Vodafone 4G, Although the same sim slot 1 works ok with BT, I have checked all the APN settings, and tried, doing a sim reset, as advised by Vodafone, and even replaced the sim, any help please would be much appriciated

[Retired-Sarah]

Hi @jimboy47

Welcome to the eForum.

As this isn’t a phone we supply, we’re unable to provide any support.

Please contact the manufacturer for further advice.

Thanks,

Sarah

[jimboy47]

I have spoken to ASUS Support and they state that Vodafone must be somehow blocking the phone on the network as it support Al the bands for Vodafone in UK, and the phone is working on BT Simm with 4G no issues.

[Ben_H]

Hi @jimboy47

While we don't block handset models, there will be certain requirements to use our 4G network.

You'll need to check you're in a 4G area.

You'll also need to be on a 4G plan.

Our 4G service runs on the 800MHz frequency, so your handset needs to be compatible.

Thanks,

Ben

[jimboy47]

Hi Ben thanks for the reply, I have checked my 4g coverage, I have also been sent a new sim, and had my new 4g package checked, and has been re applied, I have took my Vodafone sim from my sim slot 1 and put it into my samsung galaxy 5 phone and it works, but does not on mind, but if I move my BT SIM from sim slot to to 1, I get 4g straight away, so this would suggest that my phone is capable and the Vodafone sim is ok so looks like a network issue, see below for bands support on my phone its a ASUS MODEL  IS ASUS_Z00AD, thanks James.

• GSM:
  • 850, 900, 1800, 1900 MHz
• UMTS:
  • 850, 900, 1900, 2100 MHz
• FDD LTE:
  • 700 (band 17), 700 (band 28), 800 (band 18), 800 (band 19), 800 (band 20), 850 (band 5), 900 (band 8), 1700/2100 (band 4), 1800 (band 3), 1900 (band 2), 2100 (band 1), 2600 (band 7) MHz
• TDD LTE:
  • 1900 (band 39), 2300 (band 40), 2500 (band 41), 2600 (band 38) MHz
• Data:
  • LTE Cat 4 (150/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, EDGE, GPRS

[Retired-Laura · Accepted solution]

Hi @jimboy47

We don’t support that phone, but from what I can see, there are a few versions available.

Not all versions work on 800MHz which is what we use - it sounds like your phone uses 850MHz instead.

It’s possible the BT SIM worked, because their 4G works on the 850MHz frequency.

See our blog for more information on 4G frequencies.

Cheers,

Laura

[hrym]

Laura's right.  850mhz is almost certainly your problem.  I'm surprised ASUS didn't know that, tbh.

[jimboy47]

Hi There thanks for your reply, I have checked the spec of my phone and by the looks of it , it does support 800mhz, please see below.

thanks Jimboy47

Network

Technology	GSM / HSPA / LTE
2G bands	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands	HSDPA 850 / 900 / 1900 / 2100
	TD-SCDMA 1900 / 2100 - China & India
4G bands	LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 8(900), 28(700) - Taiwan
	LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 20(800) - Global
	LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 17(700), 20(800) - US
	LTE band 1(2100), 3(1800), 38(2600), 39(1900), 40(2300), 41(2500) - China & India
Speed	HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps

[hrym]

4G is slightly confusing as it refers to channels rather than frequency bands.   Last time I looked, Wikipedia had an extensive list of the ones used.

Your phone does only appear to use 850mhz for 3G, though, so it'll always have trouble with that.   I presume your account does include 4G? (just a thought).

[iainmann]

I've got a Zenfone 2 and it works well with Vodafone 4G. But there are a few model varients and it can be confusing. Mine is ZE551ML. 

Whar's yours?